视频捕捉

[srgzf]

#if !defined(AFX_CAPTUREVIDEO_H__F5345AA4_A39F_4B07_B843_3D87C4287AA0__INCLUDED_)
#define AFX_CAPTUREVIDEO_H__F5345AA4_A39F_4B07_B843_3D87C4287AA0__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
// aptureVideo.h : header file
//
#include <streams.h> //DS接口、基类的定义
#include <atlbase.h>
/////////////////////////////////////////////////////////////////////////////
// CaptureVideo window

#include <windows.h>

#include <dshow.h>
#ifndef SAFE_RELEASE
#define SAFE_RELEASE( x ) \
if ( NULL != x ) \
{ \
　x->Release( ); \
　x = NULL; \
}
#endif

class CaptureVideo : public CWnd
{
// Construction
public:
CaptureVideo();

// Attributes
public:

// Operations
public:

// Overrides
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CaptureVideo)
//}}AFX_VIRTUAL

// Implementation
public:
HRESULT Init(int iDeviceID,HWND hWnd);
void GrabOneFrame(BOOL bGrab);
virtual ~CaptureVideo();

// Generated message map functions
protected:
HRESULT InitCaptureGraphBuilder();
HRESULT SetupVideoWindow();
void ResizeVideoWindow();
void FreeMediaType(AM_MEDIA_TYPE& mt);
//{{AFX_MSG(CaptureVideo)
// NOTE - the ClassWizard will add and remove member functions here.
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
private:
HWND m_hWnd;
IGraphBuilder *m_pGB;
ICaptureGraphBuilder2* m_pCapture;
IBaseFilter* m_pBF;
IMediaControl* m_pMC;
IVideoWindow* m_pVW;
CComPtr<ISampleGrabber> m_pGrabber;

};

CComPtr<ISampleGrabber> m_pGrabber;
我这儿定义有什么错吗？怎么解决呢，我用的是VC6.0+DirectShow9.0
编译器接示，
c:\ds\apturevideo.h(68) : error C2065: 'ISampleGrabber' : undeclared identifier
c:\ds\apturevideo.h(68) : error C2955: 'CComPtr' : use of class template requires template argument list
c:\program files\microsoft visual studio\vc98\atl\include\atlbase.h(563) : see declaration of 'CComPtr'